Hi: mas1500... It's part of the courtesy lighting system. Keeps the foot wells lit. In our Laramie Longhorn they're everywhere. In the door liners under the back seats in the roof console to name a few!!! Safer than a shot glass to keep you well lit!!!Recently a passenger while my gf took a turn at the wheel, i noticed (under dash) a blue light between the steering colum cowl and the dashboard, just curious what it is...no accessory lights or switches ever added to my 2016
Dieseldragon North shore of Lake Erie.